SN74LS257D Motorola, SN74LS257D Datasheet - Page 4

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SN74LS257D

Manufacturer Part Number
SN74LS257D
Description
QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
Manufacturer
Motorola
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SN74LS257DR
Manufacturer:
TI
Quantity:
20 000
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
t PLH
t PHL
t PLH
t PHL
t PZH
t PZL
t PLZ
t PHZ
V IH
V IL
V IL
V IK
V OH
V OH
V OL
V OL
I OZH
I OZL
I IH
I IH
I IL
I OS
I CC
I CC
Symbol
Symbol
Symbol
Symbol
Propagation Delay, Data to Output
Propagation Delay, Select to Output
Output Enable Time to HIGH Level
Output Enable Time to LOW Level
Output Disable Time to LOW Level
Output Disable Time from HIGH Level
Input HIGH Voltage
Input LOW Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output HIGH Voltage
Output LOW Voltage
Output LOW Voltage
Output Off Current — HIGH
Output Off Current — LOW
Input HIGH Current
Input LOW Current
Short Circuit Current (Note 1)
Power Supply Current
Other Inputs
S Inputs
Other Inputs
S Inputs
All Inputs
Total, Output HIGH
Total, Output LOW
Total, Output 3-State
(T A = 25 C, V CC = 5.0 V) See SN54LS251 for Waveforms
Parameter
Parameter
Parameter
Parameter
SN54/74LS257B
LS257B
LS258B
LS257B
LS258B
LS257B
LS258B
54, 74
54
74
54
74
74
FAST AND LS TTL DATA
Min
– 30
Min
2.0
2.4
2.4
Limits
Limits
– 0.65
5-430
0.25
0.35
Typ
Typ
3.4
3.1
10
12
14
14
20
20
16
18
D
SN54/74LS258B
– 130
– 1.5
– 0.4
Max
Max
– 20
0.7
0.8
0.4
0.5
0.1
0.2
9.0
13
15
21
21
25
25
25
25
20
20
40
10
16
14
19
16
(unless otherwise specified)
Unit
Unit
Unit
Unit
mA
mA
mA
mA
mA
mA
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
V
V
A
A
A
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
Guaranteed Input LOW Voltage for
All Inputs
All Inputs
V CC = MIN, I IN = – 18 mA
V CC = MIN, I OH = MAX, V IN = V IH
V CC = MIN, I OH = MAX, V IN = V IH
or V IL per Truth Table
or V IL per Truth Table
I OL = 12 mA
I OL = 24 mA
V CC = MAX, V OUT = 2.7 V
V CC = MAX, V OUT = 0.4 V
V CC = MAX, V IN = 2.7 V
V CC = MAX, V IN = 7.0 V
V CC = MAX, V IN = 0.4 V
V CC = MAX
V CC = MAX
V CC = MAX
Figures 1 & 2
Figures 1 & 2
Figures 4 & 5
Figures 3 & 5
Figures 3 & 5
Figures 4 & 5
Test Conditions
Test Conditions
Test Conditions
Test Conditions
V CC = V CC MIN,
V IN = V IL or V IH
V IN = V IL or V IH
per Truth Table
per Truth Table
C L = 5.0 pF
C L = 5.0 pF
R L = 667
R L = 667
R L = 667
R L = 667
C L = 45 pF
C L = 45 pF
C L = 45 pF
C L = 45 pF

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